Your SD card must be corrupt or incomplete. Copy everything from internal memory (apart from map) to the SD card, add new map folder & run F/A again.
Confirm you followed this "DO NOT just add this bootloader system file to your SDHC card and expect it to run. You MUST first load it to your original SD card or internal memory and start your device. THEN it can read SDHC's" from [Only registered and activated users can see links. ]